Soil Disturbance Affects Plant Productivity via Soil Microbial Community Shifts.
Soil Disturbance Affects Plant Productivity via Soil Microbial Community Shifts.
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DOI：
10.3389/fmicb.2021.619711
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发表时间：
2021
影响因子：
5.2
通讯作者：
Drown DM
中科院分区：
文献类型：
--
作者：
Seitz TJ;Schütte UME;Drown DM
气候研究的最新进展发现，永久冻土特别容易受到大气和气候变化的影响，特别是在阿拉斯加，85%的土地被不连续的永久冻土覆盖。随着冻土融化，研究表明，自然和人为的土壤扰动导致微生物群落的成员组成和生物量以及功能多样性发生变化。北方森林是许多植物的家园，这些植物是许多阿拉斯加原住民社区赖以生存的食物。然而，目前还不清楚观察到的土壤微生物的变化如何影响作为主要食物来源的地上植物群落。在这项研究中，我们测试了这一假设，即微生物群落与冻土融化影响植物生产力的生长在北方森林和苔原生态系统中发现的五种植物，包括低灌木蔓越莓和沼泽蓝莓，与微生物群落的活动层土壤的冻土融化梯度。我们发现，植物生产力显着影响的微生物土壤接种剂。与未受干扰的土壤中接种微生物的植物相比，接种来自解冻永久冻土的植物群落的生产力下降。我们使用宏基因组测序，以确定微生物群落从以上解冻永久冻土扰动土壤中的微生物群落在分类学上的不同，从未受干扰的土壤中的微生物群落以上完整的永久冻土。这些结果的组合表明，植物生产力的下降可能与土壤扰动驱动的微生物群落成员和丰度的变化。这些数据有助于了解微生物群落如何受到土壤扰动和气候变化的影响，以及这些群落的变化如何进一步影响北方森林的植物生产力，以及更广泛的生态系统健康。
Recent advances in climate research have discovered that permafrost is particularly vulnerable to the changes occurring in the atmosphere and climate, especially in Alaska where 85% of the land is underlain by mostly discontinuous permafrost. As permafrost thaws, research has shown that natural and anthropogenic soil disturbance causes microbial communities to undergo shifts in membership composition and biomass, as well as in functional diversity. Boreal forests are home to many plants that are integral to the subsistence diets of many Alaska Native communities. Yet, it is unclear how the observed shifts in soil microbes can affect above ground plant communities that are relied on as a major source of food. In this study, we tested the hypothesis that microbial communities associated with permafrost thaw affect plant productivity by growing five plant species found in Boreal forests and Tundra ecosystems, including low-bush cranberry and bog blueberry, with microbial communities from the active layer soils of a permafrost thaw gradient. We found that plant productivity was significantly affected by the microbial soil inoculants. Plants inoculated with communities from above thawing permafrost showed decreased productivity compared to plants inoculated with microbes from undisturbed soils. We used metagenomic sequencing to determine that microbial communities from disturbed soils above thawing permafrost differ in taxonomy from microbial communities in undisturbed soils above intact permafrost. The combination of these results indicates that a decrease in plant productivity can be linked to soil disturbance driven changes in microbial community membership and abundance. These data contribute to an understanding of how microbial communities can be affected by soil disturbance and climate change, and how those community shifts can further influence plant productivity in Boreal forests and more broadly, ecosystem health.
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影响因子：
4.4
作者：
Burkert, Alexander;Douglas, Thomas A.;Mackelprang, Rachel
通讯作者：
Mackelprang, Rachel
影响因子：
5.2
作者：
Coolen MJ;Orsi WD
通讯作者：
Orsi WD
影响因子：
5.1
作者：
Campbell, Barbara J.;Polson, Shawn W.;Schuur, Edward A. G.
通讯作者：
Schuur, Edward A. G.
影响因子：
2.8
作者：
Axelrood, PE;Chow, ML;Davies, J
通讯作者：
Davies, J
影响因子：
2.9
作者：
Chapin, F. Stuart, III;Robards, Martin D.;Naylor, Rosamond L.
通讯作者：
Naylor, Rosamond L.